AI agents call rg_search_notes to retrieve information from Obsidian Vault Search for Claude without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs read-only search operations against an Obsidian vault using ripgrep. It retrieves and analyzes note content without creating, modifying, or deleting data. The search pattern matches standard Read category tools (search, query, find operations). No side effects or data mutations are implied by the name, server description, or sibling tool names.
From the tool's definition Tool name 'rg_search_notes' combined with server description stating it 'search and analyze Obsidian vault content using ripgrep' and sibling tools named 'rg_search_backlinks', 'rg_search_links', 'rg_search_orphaned_notes', 'rg_search_recent_notes' all…
Documented attack patterns abuse exactly the kind of access rg_search_notes gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Obsidian Vault Search for Claude, and nothing reaches the server without passing your rules. This is the rule we recommend for rg_search_notes:
{
"version": "1",
"default": "deny",
"tools": {
"rg_search_notes": {}
}
}rg_search_notes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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rg_search_notes. It is categorised as a Read tool in the Obsidian Vault Search for Claude MCP Server, which means it retrieves data without modifying state.
Register the Obsidian Vault Search for Claude MCP server in PolicyLayer and add a rule for rg_search_notes: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Obsidian Vault Search for Claude. Nothing to install.
rg_search_notes is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the rg_search_notes rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for rg_search_notes. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
rg_search_notes is provided by the Obsidian Vault Search for Claude MCP server (kpetrovsky/kp-ripgrep-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Obsidian Vault Search for Claude, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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5 Obsidian Vault Search for Claude tools catalogued and risk-classified — across an index of 43,000+ MCP servers.